Combine ram

So I just bought a pair of 8GB 2400 memory sticks and wanted to pair them with the pair of 4GB 2400 ones I already had. (They're both DDR4, trust me.) I read on the internet beforehand that it is possible to combine them, and so I thought I'd have myself some nice 24 Gigs of RAM. I put the...

Hey guys just want someone elses opinion on this pc i built a while back. I5 8600k at 4.1ghz Gtx 1060 6gb zotac amp edition 2x8 ddr4 2400 vengence ram Z370-p mobo Cooler master 212 evo x turbo dual fan cpu cooler 2 x 1tb westerndigital harddrives Corsair rm650x psu BitFenix Nova TG black...